Setting the correct end play on a VW Volkswagen crankshaft and flywheel can mean life or death of a air cooled motor. Too tight will lock the motor up and seize the rear main bearing. Too loose will pound the case with excessive movement. Never use used shims when setting end play. Used shims will vary in thickness from the inside to the outside, giving an inaccurate measurement. Always use new shims. Its faster and you know it is right on money. You are supposed to use 3 shims to reduce the end play to .003 to .005 of an inch. I like to be on the .004 or .005 side., leaving no room for a lock up. Shims are sold individually. The VW Flywheel Endplay Shim fits 1300-1600CC Type 1/2/3 Based Engines. A combination of 3 Flywheel Shims are used to set the crankshaft endplay. The shims are sold individually, a total of 3 Shims (Can be Different Sizes) are required. The shims fit 1966 through 1977 Standard Beetles, 1971 through 1979 Super Beetles, 1966 through 1974 Karmann Ghias, 1963 through 1971 Type 2 Bus models, 1962 through 1973 Type 3s and 1973 through 1974 Things. Setting the crankshaft end play is crucial to ensure the main bearings do not wear out prematurely. The OEM specifications measurement is 0.075-0.125mm (or .003-.005") for those using the archaic imperial measurement in inches. Therein lays the biggest math hurdle that confuses people when it comes to ordering flywheel shims and setting the end play. We keep measuring in thousandths of an inch. So our recommendation is instead of trying to convert the flywheel shim measurements over to inches, get your initial end play measurement (which is usually done with a dial caliper that measures in inches) and convert that first measurement over to millimeters. Then all of the metric flywheel shims are much easier to deal with! For instance, when we measured the end play on our 1800cc Super Beetle build, we came up with a measurement of .044" (Forty-four thousandths).To convert our thousandths to millimeters we multiply the inches measurement by 25.4, the length of 1" in millimeters..044(") X 25.4(mm) = 1.1176.Now we take our end play in millimeters and subtract our minimum recommended metric measurement end play:1.1176mm - 0.075m = 1.0426mmSo we want 1.04mm of shims.Now using the available shims, .24, .30, .32, .34, .36 and .38, we want 3 shims that get us to that number, easy enough!Drop out the decimal for "simplicity's" sake and we want three numbers to add up to 104.34 + 34 + 36 = 104So we want 2, .34mm shims and 1, .36mm shim - it's that easy.As .076mm is the minimum recommended end play, if you want to play it safe, you might also to order some extra sizes of shims that are the same, slightly thicker or thinner than the "middle" shim measurement just in case. Unless you want to spend about $50 and just get 3 of each shim to have all possible combinations covered!A middle measurement:1.1176mm - 0.100mm = 1.0176mm34 + 34 + 34 = 102 (one more of the same "middle" sized shim)A max measurement:1.1176mm - 0.125mm = .9926mm34 + 30 + 36 = 100 (one thinner and one thicker shim) 113105281A 113105283A 113105285A 113105287A 113105289A 113105291A
